钢管铅阻尼器疲劳性能试验研究  

Experimental study on fatigue property of lead-filled steel tube damper

作　　者：周云[1] 卢德辉[1] 张敏 张超[1] 邓雪松[1] ZHOU Yun;LU Dehui;ZHANG Min;ZHANG Chao;DENG Xuesong(School of Civil Engineering, Guangzhou University, Guangzhou 510006, China;Changzhou Road Structural Damping Co., Ltd, Changzhou 213000, China)

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]常州容大结构减振股份有限公司,江苏常州213000

出　　处：《建筑结构学报》2018年第7期131-136,共6页Journal of Building Structures

基　　金：长江学者和创新团队发展计划(IRT13057);广东自然科学基金研究团队项目(8351009101000001);广州市高校“羊城学者”首席科学家项目(10A026S)

摘　　要：设计4个钢管铅阻尼器,对其中3个钢管铅阻尼器进行疲劳循环往复加载试验,对1个钢管铅阻尼器进行常规低周往复加载试验,研究钢管铅阻尼器的疲劳性能及抗过载能力,验证钢管铅阻尼器滞回耗能性能,揭示疲劳循环往复加载试验与常规低周往复加载试验中钢管铅阻尼器性能的异同。研究结果表明：钢管铅阻尼器在设计位移循环加载下,各项疲劳性能指标均能够满足JGJ 297—2013《建筑消能减震技术规程》中对金属阻尼器疲劳性能规定的要求;在2倍设计位移和1.5倍设计位移循环加载下,能够承受一定循环次数的加载,疲劳性能良好;经历偶然过载后仍能承受一定循环次数的加载,抗过载能力强;钢管铅阻尼器疲劳性能试验的破坏形式与常规性能试验的破坏形式一致,随着高径比的增加,钢管铅阻尼器破坏形式由剪切型变为弯剪型;钢管铅阻尼器在不同加载位移下,滞回曲线对称且饱满,近似于平行四边形,滞回耗能性能优良。To investigate the fatigue resistance, over-load adaptability, and energy dissipation performance of lead- filled steel tube damper （LFSTD） , three different LFSTD specimens were designed and tested under fatigue loading conditions, and the remaining LFSTD specimen was designed and tested under conventional cyclic loading. The potential differences of the behavior of the dampers subjected to different loading protocols were revealed. The experimental results indicate that, the fatigue performance characteristics of the LFSTDs under the design displacement loading condition all satisfy the requirements of JGJ 297--2013 ＇ Technical specification for seismic energy dissipation of building＇ for metallic dampers; under cyclic loading conditions which are 2 times or 1. 5 times of design displacement, the LFSTDs still show excellent fatigue performance. The specimens also exhibit good over-load adaptability under an occasionally over-loading condition. The LFSTDs exhibit the same failure mode under either the fatigue loading condition or the conventional cyclic loading condition. The failure mode changes from a shear type to a bending-shear type with increase in the height-to-diameter ratio of the LFSTD. Under different displacement loading conditions, the LFSTDs exhibit good energy dissipation capacity, with symmetrical, full and parallelogram-shaped hysteretic loops.

关 键 词：钢管铅阻尼器 金属阻尼器 疲劳性能试验 低周往复加载试验 疲劳性能 

分 类 号：TU352.1[建筑科学—结构工程] TU317.2